Difference between revisions of "VAR-SOM-SD600 gpios"

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= GPIOs features =
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GPIOs features
<div>The APQ8064 SoC GPIOs features are as follows</div><div>* 90 GPIO pins (GPIO_0 to GPIO_89)</div><div>* Configurable pull-up/down</div><div>* Configurable output drive current</div><div>* Interruptable GPIOs</div><div><br/></div>
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<div>The APQ8064 SoC GPIOs features are as follows</div>
 +
*90 GPIO pins (GPIO_0 to GPIO_89)
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*Configurable pull-up/down
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*Configurable output drive current
 +
*Interruptable GPIOs
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<div><br/></div>
 
= GPIO manipulation =
 
= GPIO manipulation =
<div><div>GPIO manipulation is done through the standard gpiolib<br/></div><div>The usage / API is well described in kernel/Documentation/gpio.txt.</div><div><br/></div><div>Additional useful links:</div><div>
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<div><div>GPIO manipulation is done through the standard gpiolib<br/>The usage / API is well described in kernel/Documentation/gpio.txt.</div><div><br/></div><div>Additional useful links:</div><div>
http://elinux.org/GPIO
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[http://elinux.org/GPIO http://elinux.org/GPIO]
  
 
[https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c]
 
[https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c]
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[http://mondi.web.cs.unibo.it/gpio_control.html http://mondi.web.cs.unibo.it/gpio_control.html]
 
[http://mondi.web.cs.unibo.it/gpio_control.html http://mondi.web.cs.unibo.it/gpio_control.html]
<br/></div></div>
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= PinMux configuration<br/> =
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<br/><span style="font-size: 12px;">GPIO mux configuration is done in kernel\arch\arm\mach-msm\board-8064-gpiomux.c</span>
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At apq8064_init_gpiomux(void) you can find several examples of pinmux configuration
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&nbsp;for example struct apq8064_gsbi2_UART2_configs configures GPIO pins 22,23,24 and 25 to serial port.
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<pre /><div><br/><br/></div></div></div><br/><br/><br/><br/><br/><br/><br/>
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<br/><br/> <br/>
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<br/><br/>
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<br/><br/> <br/> <br/><br/><br/><br/> <br/><br/><br/><br/><br/><br/>
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<br/><br/><br/><br/><br/><br/><br/>
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<br/><br/> <br/>
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<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
  
 
<br/><br/>
 
<br/><br/>

Revision as of 11:44, 4 May 2014

GPIOs features

The APQ8064 SoC GPIOs features are as follows
  • 90 GPIO pins (GPIO_0 to GPIO_89)
  • Configurable pull-up/down
  • Configurable output drive current
  • Interruptable GPIOs

1 GPIO manipulation

GPIO manipulation is done through the standard gpiolib
The usage / API is well described in kernel/Documentation/gpio.txt.

Additional useful links:

http://elinux.org/GPIO

https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c

https://developer.ridgerun.com/wiki/index.php/How_to_use_GPIO_signals

http://mondi.web.cs.unibo.it/gpio_control.html


2 PinMux configuration


GPIO mux configuration is done in kernel\arch\arm\mach-msm\board-8064-gpiomux.c

At apq8064_init_gpiomux(void) you can find several examples of pinmux configuration

 for example struct apq8064_gsbi2_UART2_configs configures GPIO pins 22,23,24 and 25 to serial port.